Alyssa Litwin, 33, was charged Friday with one count of tampering with evidence, two counts of manslaughter, four counts of endangering a child and one count of aggravated assault.

Litwin was engaged in several text conversations in the minutes leading up to the Dec. 4 crash, but deleted the messages before handing her phone over to investigators, according to a complaint obtained by the Stephenville Empire-Tribune.

The crash, which happened in Erath County north of Morgan Mill on U.S. 281 North near County Road 466, seriously injured 33-year-old Carrie Sackett and killed her two daughters, 9-month-old Charli and 5-year-old Codie.

"We should all be chastened by this horrific, completely avoidable catastrophe for the Sackett family and put our cellphones away when we are driving," Erath County District Attorney Alan Nash said in a written statement.

A GoFundMe to pay for the family's funeral and medical expenses has been set up.